/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.flink.ml.common.model;

import org.apache.flink.api.common.functions.RuntimeContext;
import org.apache.flink.types.Row;

import java.util.List;

/**
 * A {@link ModelSource} implementation that reads the model from the memory.
 */
public class RowsModelSource implements ModelSource {

	/**
	 * The rows that hosts the model.
	 */
	private final List<Row> modelRows;

	/**
	 * Construct a RowsModelSource with the given rows containing a model.
	 *
	 * @param modelRows The rows that contains a model.
	 */
	public RowsModelSource(List<Row> modelRows) {
		this.modelRows = modelRows;
	}

	@Override
	public List<Row> getModelRows(RuntimeContext runtimeContext) {
		return modelRows;
	}
}
